.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0 var(--content-pad);
  transition: background var(--dur-base) var(--ease-out-expo),
              border-color var(--dur-base) var(--ease-out-expo),
              backdrop-filter var(--dur-base) var(--ease-out-expo),
              transform var(--dur-base) var(--ease-out-expo);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: rgba(9, 9, 11, 0.72);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom-color: var(--c-line);
}

.nav.is-hidden { transform: translateY(-100%); }

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  color: #fff;
  text-decoration: none;
}
.logo__mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease-out-expo);
}
.logo__mark img { width: 100%; height: 100%; object-fit: contain; }
.nav__brand:hover .logo__mark { transform: rotate(-12deg); }
.nav__brand span {
  background: linear-gradient(135deg, #a78bfa 0%, #22d3ee 50%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-left: -0.3em;
  padding-left: 0;
}

.nav__links {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}
.nav__link {
  position: relative;
  padding: 0.6em 1.05em;
  font-size: 0.92rem;
  color: var(--c-text-2);
  font-weight: 500;
  transition: color var(--dur-base) var(--ease-out-expo);
  border-radius: var(--r-pill);
}
.nav__link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.05);
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out-expo);
}
.nav__link:hover { color: var(--c-text); }
.nav__link:hover::before { opacity: 1; }

.nav__cta {
  padding: 0.72em 1.4em;
  font-size: 0.88rem;
}

.nav__burger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--c-line);
  position: relative;
  background: rgba(255,255,255,0.02);
  transition: background var(--dur-base) var(--ease-out-expo);
}
.nav__burger span {
  position: absolute;
  left: 50%; top: 50%;
  width: 18px; height: 1.5px;
  background: var(--c-text);
  transform-origin: center;
  transition: transform var(--dur-base) var(--ease-out-expo),
              opacity var(--dur-fast) var(--ease-out-expo);
}
.nav__burger span:nth-child(1) { transform: translate(-50%, -7px); }
.nav__burger span:nth-child(2) { transform: translate(-50%, -50%); }
.nav__burger span:nth-child(3) { transform: translate(-50%, 5px); }

body.menu-open .nav__burger span:nth-child(1) { transform: translate(-50%, -50%) rotate(45deg); }
body.menu-open .nav__burger span:nth-child(2) { opacity: 0; }
body.menu-open .nav__burger span:nth-child(3) { transform: translate(-50%, -50%) rotate(-45deg); }

@media (max-width: 880px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: block; }
}

/* ───── MOBILE MENU ───── */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-nav) - 1);
  background: rgba(5,5,7,0.96);
  backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  padding: var(--content-pad);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition: opacity var(--dur-base) var(--ease-out-expo),
              transform var(--dur-base) var(--ease-out-expo),
              visibility var(--dur-base) var(--ease-out-expo);
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-menu__links {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  text-align: center;
}
.mobile-menu__link {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.02em;
  transition: color var(--dur-base) var(--ease-out-expo);
}
.mobile-menu__link:hover {
  background: var(--grad-primary);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

.mobile-menu__cta { font-size: 1rem; padding: 1em 2em; }

.mobile-menu__meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--c-text-2);
  margin-top: 1rem;
  text-align: center;
}
.mobile-menu__meta a { transition: color var(--dur-base) var(--ease-out-expo); }
.mobile-menu__meta a:hover { color: var(--c-text); }